Sohn had been riding with five other cyclists in the Dakota Ridge subdivision.

The roads in the subdivision are private, but they are desirable to many road cyclists because of their hills, smooth pavement and low vehicular traffic.

Sohn and the other cyclists had regrouped after climbing to the top of the subdivision.

The cyclists then rode to the bottom of the hill.

According to the Routt County Sheriff's Office, Sohn was known to be a cautious rider and was typically the last to make it downhill.

The cyclists waited five to 10 minutes before riding uphill to look for Sohn.

They found him not breathing in a ditch along a curve.

CPR was not successful, and Sohn was pronounced dead at the scene.

Sohn was wearing a helmet, and it was damaged, undersheriff Ray Birch said.

"At one point, the bicycle was actually launched for a distance and came to a rest," Birch said. "One would have to think it was a significant impact. Twenty or 30 miles per hour on a bicycle is very significant."

Birch said investigators would be reconstructing the crash to rule out anything criminal and determine whether anything else caused Sohn to go off the road.

Birch said the bicycle will also be examined by an expert to determine if there were any mechanical issues.

"The sport of bicycling is very popular in this county," Birch said. "We need to get a message out about safety."